History of Helicopters?
Answers
Answer:
The history of vertical flight began at least as early as about 400 ce; there are historical references to a Chinese kite that used a rotary wing as a source of lift. Toys using the principle of the helicopter—a rotary blade turned by the pull of a string—were known during the Middle Ages.
People in China and Europe made toys that worked like helicopters many hundreds of years ago. In the 1400s the Italian artist and engineer Leonardo da Vinci drew an aircraft much like today’s helicopters. It was never built. In 1843 an English inventor built a helicopter powered by a steam engine. It could barely get off the ground.
By the 1900s more powerful engines were available. Engineers used these engines to improve the helicopter. They also made improvements that helped keep helicopters stable in the air. The first successful helicopters were built in Germany in the 1930s. After that, engineers designed new types of helicopters that were used for all kinds of different purposes.
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